Joseph noebis and nelson mooee



(No M0691.)

J. NORRIS 3a NMOORE.

LOGKING STOP 000K.

Patented Nov. 20, 1883.

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UNITED STATES JOSEPH NORRIS AND NELSON MOORE,

l PATENT OFFICE.

or DUKE CENTRE, PENNSYLVANIA,

ASSIGNORS OF ONE-THIRD TO ALVIN H. LOW, OF SAME PLACE LOCKING STOP-COCK.

SPECIFICATION forming part of Letters Patent No. 288,725, dated November 20, 1883. A Application filed September 27, 1882. (No model.)

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, ref erence being had to the accompanying draw ings, and to the letters and figures of reference marked thereon,which form apart of this specification. l

The object of ourinvention is to construct a stop-cock which may be kept in a locked.

position, either open or closed.

Referring to the drawings, Figurel isaside elevationof a stop-cock with our improvements attached. Fig. 2 is a longitudinal sec tional view of the same, taken on line 00 x of Fig. 1. Fig. 3is asection on line y yof Fig. 2. Figs. 4:, 5, and 6 are details to be referred to.

A is the shell of the stopcock, which is bored out, and a plug or core fitted thereto in the ordinary manner.

In the upper and inner end of the shell A is formed a groove, D, in which the projecting end of look-bolt 0 slides when the said end is released from the holes E in shell A, as will be hereinafter more fully set forth.

B represents a plug or core, which is recessed in its upper end at a, to receive the locking parts of our device. In the recess is placed a series of tumblers formed of metal plates, 1), having in one end a slot, 0, into which is secured the end of spring cl, its free end bearing against the wall of y the recess, as shown ate in Fig. 3.

Interposed between the tumblers b are the metal plates f with a slot, h, formed in ono end to receive the 'pin t, cast upon the upper.

face of thelock-boltO. Pin is, also cast upon the face of the lock-bolt 0, serves as a stop for the tumblers b, as shown in Fig. 3. The lock-bolt C also has aslot, m, through which protrudes the pin Z, which is secured to the floor of the recess a, and a spring, a, is secured to the lock-bolt, as shown in Fig. 4.

The operation of ,our device is as follows: In-

sort a key similar to the one shown in the head of the core in Figs. land 2, theprojection 0 in the floor of the recess a serving as a pivot on which the key turns. It will be readily seen, when this is done, that a half-turn of the key to the right, working against the cam-face of lock-bolt O withdraws the projecting end of said lock-bolt from one of the series of holes E in the shell A far enough to allow the core to be readily turned within the shell A in either direction. If the key be then turned another half-turn in the same direction-that is, to the rightthe spring 12 operates upon the lock-bolt C, so that when the core is moved in either direction the projecting end of the lock-bolt O 011 coming opposite either of the holes E in the shell A is forced into said hole, thereby looking core 18 and preventing itsbeing turned further -until the key is again inserted and given a half-turn to withdrawthe lock-bolt G, as before described.

We do not wish to confine ourselves to the peculiar mechanism constituting the lock herein described, but reserve the right to modify the same; nor do we claim the construction of the lock illustrated in this application, but have thus particularly described "and illustrated it as a practical lock to combine with the stop-cock. Any modification t of said lock contained in said recess by which the locking may be effected we consider as equivalent thereto.

The device may be operated with a single hole, E, when it is only desired to lock the stop-cock closed; or, by adding another looking-bolt t0 the lock, it may serve in looking the stop-cock, either open or closed. We specify two or more holes, E, as being the most simple and desirable form. The location of this hole or these holes E is to be regulated by the location of the bolt 0, as all that is required of the hole or holes E is to engage the end of the lock-bolt Owhen the stopcock is open or closed, as the case'may be.

Having thus fully described our invention,

what we claim as new and useful, and desire the core will be locked to said shell until re- 10 to secure by Letters Patent, isleased by the application of a key, all sub- A stop-cock having its core recessed to re I stantially as specified.

ceive a lock and havin its shell rovided with one or more holes on its inne? side to I receive the end of the lock-bolt, in combination with a locking device fitting into said re- Witnesses:

cess in such a manner that when the end of J. L. BRECKENRIDGE,

the lock-bolt is inserted into one of said holes 1 CHAS. BELL. 

